Line number and page end margin indicator for typewriters



Jan. 27, 1953 P. s. WAMSLEY 2,626,697

LINE NUMBER AND PAGE END MARGIN INDICATOR FOR TYPEWRITERS 2 SHEETSSHEET1 Filed Aug. 29, 1951 INVENTOR.

. 9 BY wad-9M 4 aalymaqfim Pery/ 5. Wams/ey Jan. 27, 1953 P a WAMSLEY2,626,697

LINE NUMBER AND PAGE END MARGIN INDICATOR FOR TYPEWRITERS Filed Aug. 29,1951 2 SHEETS-SHEET 2 Fig. 4

Pery/ S. Wams/ey INVENTOR.

BY WW m Patented Jan. 2 7, 1953 UNITED STATES PATENT OFFICE LINE NUMBERAND PAGE END MARGIN INDICATOR FOR TYPEWRITERS Peryl S Wamsley, Athens,Ohio Application August 29, 1951, Serial No. 244,121

4 Claims.

ber of lines typed, or to be typed, so that the operator will knowexactly the bottom margin left on the sheet before and after the typingof each line, both on standard and larger sheets of paper.

Another object is to provide an attachment for the above purposes inwhich the tape is unwound from a disk by line spacing operation of theplaten and which may be operated independently of the platen to rewindthe tape for presenting to a predetermined starting position relative toa new sheet to be typed.

Still another object is to provide an attachment for the above purposesattachable to the conventional platen carriage of the typewriter and tothe platen shaft without material alteration in the carriage or shaftand which is accurate, easy to service, not liable to become defectivein operation, and is comparatively inexpensive to manufacture.

Other and subordinate objects,-within the purview of'my invention,together with the precise nature of my improvements will become readilyapparent when the succeeding description and claims are read withreference to the drawings accompanying and forming part of thisspecification. 7

In said drawings:

Figure 1 is a view in side elevation illustrating my invention in thepreferred embodiment thereof attached to the platen carriage and theplaten shaft of a typewriter;

Figure 2 is a fragmentary view in plan drawn to a larger scale;

Figure 3 is a detail view in vertical section taken on the line 3-3 ofFigure2;

Figure 4 is a fragmentary view in horizontal section partly in plan andtaken on the line 4-4 of Figure 1 and drawn to a larger scale;

Figure 5 is a view in vertical section taken on the line 5-5 of Figure4;

Figure 6 is a fragmentary view in vertical section taken on the line 6-6of Figure 4; and

Figure '7 is a view in transverse section taken on the line 1-1 ofFigure 4.

Referring to the drawings by numerals, ac-

cording to my invention, a pair of front and rear, coplanar, annulartape unwinding and rewinding disk-s I, 2 are rotatably mounted, aspresently described, in vertical position at the right hand end of theplaten carriage 3 of a typewriter 4.

The mounting for the front disk I comprises a sleeve 5 fitting over theplaten shaft 6 and provided with enlarged outer end knob I thereonserving a purpose presently seen.

A collar 8 on the inner end of the sleeve 5, and

together with the sleeve 5 is secured to said shaft 6 by a set screw 9whereby the sleeve 5 and collar 8 are rotated by the platen shaft 6. Thefront disk I fits on the sleeve 5 between the knob I and the collar 8and isconfined thereby for free rotation onsaid sleeve.

A ratchet and pawl drive is provided between the knob I and the frontdisk'I comprising radial ratchet teeth It on the outer face of the diskI, and a splined ratchet pin II slidable in a transverse bore I2 in theknob I and urged by a coil spring I3 in said bore into engagement withsaid teeth ID. A screw plug I4 closes the outer end of the bore I2. Theratchet pin I I has a bevelled front end I5 coacting with the bevel sideof the teeth It] to drive the front disk I in the same direction as theplaten I6 when the platen I6 is rotated for line spacing, said pin IIratcheting over the teeth II] when the front disk I is rotatedreversely.

The rear disk 2 is rotatably mounted on a stud bolt II threaded into anattaching plate I8 fixed to the 'end of the carriage 3 by welding IS. Ahand grip knob I9 on' the outer face of the rear disk 2 provides formanually rotating said'disk 2 for a purpose presently explained. I

I A line number counting and sheet measuring tape 2l is carried by thedisks I, 2 on the left hand side of the median plane of said disks. Thetape 2i has one end suitably fixed, as by rivets, not shown, to thefront, disk- I, is wound around said: disk I, in its normal position,and has its other end provided with a metal tab 22 frictionally, anddetachably, fitted in a peripheral slot'23-inthe rear disk- 2' wherebsaid tapeis detachably attached to the rear disk 2. Longitudinallyspaced pin holes 24 in the center of the tape 2| are engaged bycircumferentially spaced pins 25 on the rear disk 2 to prevent sideslipping of said tape 2|. The left hand side of the tape 2| is providedwith number symbols 26 for line counting purposes and indicating thepage end margin left after, or before each line is typed. The symbols 26ascend in numerical order from zero to ninety for counting lines andthey are spaced apart in accordance with single line spacing incrementsof movement of the platen I6 and.

the shaft 6. An indicating finger 28 on the carriage 3 is provided forcooperation with the number symbols 26. The right hand edge of the tape2| is graduated and numbered in inches beginning with 1, the graduationsbeing designated by the numeral 29. These graduations are for thepurpose of measuring the length of the sheet or page being typed, fortop or bottom margins and ascend in numerical order like the numbersymbols 26.

An endless driving tape, or belt, 33 is trained around the front andrear disks I, 2 on the other side of the median plane of said disks I, 2and is provided with longitudinally spaced pin holes 34 engagingcircumferentially spaced pins 35, 36 on the front and rear disks I, 2,respectively, to prevent said tape 33 from slipping. The rear disk 2 andtape 33, as will presently more clearly appear, comprise means forresetting the tape 2| to normal starting position. An edge stop lug 3'!on the tape 2| engages a stop lug 38 on the carriage 3 to establish saidnormal starting position.

In operating the invention, the sheet 39 is inserted in the typewriter 4in the usual manner 'but with its top edge even with the top of theusual line space scale, not shown. By rotating the rear disk 2 by meansof the knob 9, counterclockwise as viewed in Figure 1, the tape 2| ispreset to zero, or normal position, at the indicating finger 28. Thisnormal preset position is established by the stops 31, 38. As will beclear, in this presetting operation to normal position, the describedratchet and pawl drive between the sleeve 5 and the front disk I, whichis to say between the front disk I and the platen shaft 6, permitsrotation of the front disk I idly with respect to the platen shaft 6 towind up the tape 2| on said front disk I, if previously unwoundtherefrom. Now, as each line is typed, in single line space work, thefront disk I is driven, as previously explained, clockwise in Figures 1,2 and 4, the tape 33 is driven thereby to drive the rear disk 2clockwise to wind up the tape 2| on the rear disk 2 and unwind the tapefrom the front disk I with a step by step movement positioning thenumbers symbols 26 successively opposite the indicating finger 28 toindicate the number of each line typed.

If a top margin of a selected number of inches is required on the sheet,the tape 2| may be, at the start, set accordingly to register thecorresponding one of the number symbols 26 with the indicating finger 28and the line number indicating will start from that point. If a topmargin of a selected number of inches be required, the tape 2| should beset, for instance at l8, if a three-inch margin is required. With thelength of the sheet 39 indicated by the graduations 29, with the linecapacity of the sheet being known, the operator is constantly advised ofhow many lines the work is from the end of the page, or in other words,the operator is advised as the work progresses of the page end marginremaining. 01' course, in double, or triple line spacing, the lines oftyping are indicated by every other or third one of the number symbols26 as will be clear.

The foregoing will, it is believed, suffice to impart a clearunderstanding of my invention, without further explanation.

Manifestly, the invention, as described, is susceptible of modification,without departing from the inventive concept, and right is hereinreserved to such modifications as fall within the scope of the appendedclaims.

Having described my invention, what is claimed as new is:

1. The combination with a typewriter having a carriage and a platenshaft, of a line numbering and page end margin indicating devicecomprising .a tape having line number indicating symbols spaced alongthe same in correspondence with line spacing increments of movement ofthe platen shaft, a pair of tape unwinding and rewinding disks to whichopposite ends of the tape are attached for unwinding of the tape fromeach disk onto the other, means to rotatably attach one disk to saidshaft, a ratchet and pawl drive for rotating said one disk in onedirection upon line spacing rotation of said shaft and providing forreverse rotation of said one disk relative to said shaft, means torotatably attach the other disk to said carriage, an endless belttrained around said disks whereby rotation of said first named disk insaid one direction will rotate the other disk to wind up the tapeunwound from the first named disk, said other disk being manuallyrotatable to reverse the same and through said belt reverse the firstnamed disk to rewind the tape off said other disk onto the first nameddisk.

2. The combination according to claim 1 wherein said tape is graduatedin inches to measure the length of the sheet being typed.

3. The combination according to claim 1 wherein coacting stops areprovided on the tape and carriage limiting rewinding of the tape on thefirst named disk to preset the same.

4. The combination according to claim 1, said first named meanscomprising a sleeve fast on said shaft and having a collar and a knobthereon between which the first named disk is rotatably confined on saidsleeve.

PERYL S. WAMSLEY.

REFERENCES CITED The following references are of record in the

